<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}-科技</title>
    {% block head %}
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
          integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    {% endblock %}
    {% block link %}
    
    {% endblock %}
</head>
<body>
{% block nav %}

{% endblock %}

{% block main %}

{% endblock %}

{% block footer %}

{% endblock %}
</body>
</html>